<template>
  <nav-bar>
    <template #left>
      <div class="back" @click="backClick">
        <img src="~assets/img/common/back.svg" alt="">
      </div>
    </template>
    <template #center>
      <div class="title">
      <div class="title-item"
           v-for="(item,index) in titles" :key="item"
           :class="{active:index===currentIndex}"
           @click="titleClick(index)">{{item}}</div>
      </div>
    </template>
  </nav-bar>
</template>

<script>
import NavBar from "components/common/navbar/NavBar";

export default {
  name: "DetailNavBar",
  components: {
    NavBar,
  },
  data(){
    return {
      titles: ['商品','参数','评论','推荐'],
      currentIndex: 0,
    }
  },
  methods: {
    titleClick(index){
      this.currentIndex = index
      this.$emit('titleClick', this.currentIndex)
    },
    backClick(){
      this.$router.back()
    }
  }
};
</script>

<style>
  .title{
    display: flex;
    font-size: 13px;
  }

  .title-item{
    flex: 1;
  }

  .active {
    color: var(--color-high-text);
  }

  .back img{
    margin-top: 11px;
  }
</style>
